Why USB to SPDIF and not optical?

Steve,

Since you seem to be an expert in "jitter", can you provide a link to any qualitative data explaining this phenomenon, in layman's terms?

Lance

I just spoke with the folks @ Bel Canto...

and they essentially mirrored Steve's comments

(not that i didn't believe you Steve... i just didn't know you had responded :-) )

I asked why i'd want this 24/96 doohickey if i already had a Dac3 and a 24/96 toslink connection from my computer to the Dac3.

First (according to Bel Canto) the usb->spdif conversion in the 24/96 link is a better implementation than the one already in the Dac3 (plus the fact that the usb input doesn't do 24/96).

Secondly, he believed the optical Toslink from the computer didn't perform as well as the usb anyway.

So that's the retransmission of my conversation this afternoon.. :-) Enough for me to try one..

Happy listening

I am a little concerned about the statement that it is compatible with native Windows drivers. Do you know how the Link product interacts with XP's audio subsystem? The literature says it accepts 24/96 but I think parts of the XP subsystem probably needs to be bypassed to get 24/96 cleanly through the OS. So does it have drivers that bypass KMixer and the like and will any software product (iTunes for me) work with it directly or do you need special drives (like ASIO) to use it? Any information would be useful.

In addition, XP generally upscales 44.1 files to 48 unless special drives are installed. Does the 24/96 link help with that problem?

FYI, y'all:
My system - PC, Windows XP, ASIO4ALL, JRiver Jukebox > Belkin USB out to Giga Lab Moon USB DAC(NOS). My DAC also has coax and optical ins.

On a whim this afternoon, I inserted a $30 Behringer USB headphone amp (which also converts USB to optical) between the PC and the DAC (optical from the Behringer to the DAC). I was amazed to hear at least a 10% sound improvement, especially on my FLAC downloads from HD Tracks.

Apparently, my DAC prefers optical over USB, but I don't know why.